I just finished rereading Red Thunder by John Varley, which is a fine read, as are the other two books in his trilogy. This time, Heinlein's Rocket Ship Galileo flashed into my brain.
Please note, I am NOT in any way suggesting that Varley in any way copied Heinlein. Varley's book is richer in many ways than Heinlein's, which is a book for young readers. I read it when I was 13. It was the first science fiction I ever read.
Nevertheless, Varley and Heinlein are linked together on many inside-cover blurbs, e.g.,
Varley has earned the mantle of Heinlein
Can anyone recommend an article which discussses the influence of Heinlein on Varley?